US11325433B2 - Method for reconfiguring a device for monitoring a motor vehicle tyre - Google Patents

Method for reconfiguring a device for monitoring a motor vehicle tyre Download PDF

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US11325433B2
US11325433B2 US17/058,758 US201917058758A US11325433B2 US 11325433 B2 US11325433 B2 US 11325433B2 US 201917058758 A US201917058758 A US 201917058758A US 11325433 B2 US11325433 B2 US 11325433B2
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Prior art keywords
tire
configuration data
data
advanced
advanced data
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US20210206211A1 (en
Inventor
Davy Ribreau
Jean-Philippe BOISSET
Michael Löffler
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Continental Automotive GmbH
Continental Automotive France SAS
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Continental Automotive GmbH
Continental Automotive France SAS
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Assigned to CONTINENTAL AUTOMOTIVE FRANCE, CONTINENTAL AUTOMOTIVE GMBH reassignment CONTINENTAL AUTOMOTIVE FRANCE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BOISSET, JEAN-PHILIPPE, Löffler, Michael, RIBREAU, Davy
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0479—Communicating with external units being not part of the vehicle, e.g. tools for diagnostic, mobile phones, electronic keys or service stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
    • B60C11/24—Wear-indicating arrangements
    • B60C11/246—Tread wear monitoring systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0415—Automatically identifying wheel mounted units, e.g. after replacement or exchange of wheels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C23/00—Devices for measuring, signalling, controlling, or distributing tyre pressure or temperature, specially adapted for mounting on vehicles; Arrangement of tyre inflating devices on vehicles, e.g. of pumps or of tanks; Tyre cooling arrangements
    • B60C23/02—Signalling devices actuated by tyre pressure
    • B60C23/04—Signalling devices actuated by tyre pressure mounted on the wheel or tyre
    • B60C23/0408—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver
    • B60C23/0422—Signalling devices actuated by tyre pressure mounted on the wheel or tyre transmitting the signals by non-mechanical means from the wheel or tyre to a vehicle body mounted receiver characterised by the type of signal transmission means
    • B60C23/0433—Radio signals
    • B60C23/0447—Wheel or tyre mounted circuits
    • B60C23/0455—Transmission control of wireless signals
    • B60C23/0462—Structure of transmission protocol
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C19/00—Tyre parts or constructions not otherwise provided for
    • B60C2019/004—Tyre sensors other than for detecting tyre pressure

Definitions

  • the present invention relates to a device for monitoring a motor vehicle tire, incorporating a pressure sensor.
  • the invention relates in particular to a method for reconfiguring such a monitoring device.
  • monitoring devices incorporating pressure sensors have been capable of providing information about the pressure of a motor vehicle tire, whether the vehicle is in motion or is stationary, in order to detect any loss of tire pressure and to alert the driver if the tire pressure is too low.
  • Such monitoring devices thus make it possible not only to prevent the risk of an accident linked to driving with an underinflated tire, but also to maintain an optimum pressure in the tires of a vehicle, thereby making it possible to extend the service life of the tires, to reduce fuel consumption and, consequently, to reduce polluting emissions such as the creation of carbon dioxide for example.
  • monitoring devices have started to incorporate additional intelligent functions making it possible to generate advanced data relating to the use of the tire throughout its life cycle. This is for example information relating to the mileage of the tire, its state of wear, or else the load to which it is subjected.
  • advanced data are stored within the monitoring device. They may also be sent to an on-board computer of the vehicle, for example in order to alert the driver if any danger is detected on the basis of these advanced data, and in particular if it is necessary to replace an excessively worn tire.
  • monitoring devices are relatively expensive, they are generally not incorporated permanently into a tire. On the contrary, they are removable and may be detached from a tire in order to be attached to another replacement tire.
  • An aspect of the present invention aims to rectify all or some of the drawbacks of the prior art, in particular those described above, by proposing a method making it possible to optimize the management of the advanced data of a device for monitoring a motor vehicle tire during the life cycle of said device.
  • Such a method aims to keep, in a memory of the device, advanced data that are consistent with the tire with which said device is associated.
  • the method also aims to limit any interventions by a human operator (vehicle owner, motor vehicle technician, etc.).
  • the present invention relates to a method for reconfiguring a device for monitoring a motor vehicle tire.
  • Said monitoring device comprises:
  • the method comprises:
  • Such provisions make it possible to keep, in the memory of the monitoring device, advanced data that are consistent with the tire with which said device is associated, in particular in cases where the tire with which the monitoring device is associated is repaired or replaced.
  • an aspect of the invention may furthermore comprise one or more of the following features, taken alone or in any technically feasible combination.
  • a tire change is detected through a comparison between a check code calculated based on the previously stored configuration data and a check code calculated based on the received new configuration data.
  • detecting a tire change furthermore comprises transmission, via the communication module, of a request to confirm that the tire has not been changed if the check code calculated based on the previously stored configuration data is identical to the check code calculated based on the received new configuration data.
  • Such a confirmation may prove to be necessary for example if it is not possible to uniquely identify a tire based on the information contained in the configuration data.
  • the method furthermore comprises transmission, via the communication module, of a request to send new configuration data when a pressure measured inside the tire successively passes below a first predetermined threshold and then above a second predetermined threshold.
  • Such provisions allow the monitoring device to automatically detect that a tire change has probably taken place, and to trigger reconfiguration of the monitoring device.
  • the method furthermore comprises:
  • the monitoring device automatically detects that a tire change has probably taken place, the stored advanced data are invalidated until new configuration data are received.
  • Invalidated advanced data are not erased.
  • the monitoring device may continue to update them in the event that there has not been a tire change.
  • an on-board computer may take into account the fact that there is uncertainty with regard to the relevance of the advanced data.
  • the advanced data Upon reception of new configuration data, the advanced data will be either revalidated or erased, depending on whether or not there has been a tire change.
  • the advanced data comprise one or more of the following elements:
  • the method comprises, following the retention of the advanced data, transmission, via the communication module, of a request to send a current date.
  • the present invention relates to a device for monitoring a motor vehicle tire, comprising:
  • the device is configured so as, following reception of new configuration data, to:
  • the invention may furthermore comprise one or more of the following features, taken alone or in any technically feasible combination.
  • said device is configured so as, in order to detect a tire change, to compare a check code calculated based on the previously stored configuration data with a check code calculated based on the received new configuration data.
  • said device is furthermore configured so as to transmit, via the communication module, a request to send new configuration data when a pressure measured inside the tire successively passes below a first predetermined threshold and then above a second predetermined threshold.
  • said device is furthermore configured so as to:
  • the advanced data comprise one or more of the following elements:
  • FIG. 1 shows the main steps of a method for reconfiguring a monitoring device for a tire
  • FIG. 2 shows the main steps of one particular mode of implementation of the method according to an aspect of the invention
  • FIG. 3 shows one particular mode of implementation of a step of detecting a tire change.
  • an aspect of the present invention relates to a method making it possible to optimize the management of advanced data of a monitoring device for a motor vehicle tire.
  • Such a monitoring device comprises for example:
  • the communication module comprises wireless communication means, considered to be known to those skilled in the art, making it possible in particular to receive data, called “configuration data”, describing characteristics of the tire with which the monitoring device is associated.
  • the configuration data comprise for example the manufacturing date of the tire, the manufacturing location of the tire, a serial number making it possible to uniquely identify the tire or else at least making it possible to identify a manufacturing batch to which the tire belongs, information about the geometry of the tire (for example its internal diameter, its external diameter, etc.), the type of rubber, the thickness of the rubber, whether it is a summer or winter tire, etc.
  • the received configuration information is stored in the electronic memory of the monitoring device in order to be able to be used later if necessary.
  • the memory of the monitoring device has an electronic medium.
  • the memory of the monitoring device has an electronic medium.
  • memories with a magnetic or optical medium there is nothing that would prevent the use of other types of memory, in particular memories with a magnetic or optical medium.
  • the communication module comprises means configured so as to allow direct pairing by radio over a short distance between the monitoring device and an apparatus for configuring the monitoring device.
  • the communication module implements a wireless communication technology based on protocols such as Bluetooth, Zigbee, Wi-Fi, etc. These protocols make it possible to establish what is known as “ad hoc” communication directly between the monitoring device and the configuration apparatus without using a network infrastructure, that is to say without using an access point or an intermediate base station.
  • the apparatus for configuring the monitoring device may be a mobile telephone or a tablet on which a specific application has been installed, or else an electronic apparatus dedicated to configuring the monitoring device.
  • the configuration apparatus is used to transmit, to the monitoring device, the configuration data relating to the tire to which the monitoring device is attached.
  • the received configuration information is then stored in the electronic memory of the monitoring device.
  • the communication module comprises means configured so as to communicate with a server via a wireless wide area network, such as for example a GSM, UMTS or LTE cellular network.
  • a wireless wide area network such as for example a GSM, UMTS or LTE cellular network.
  • the configuration data for the monitoring device are for example communicated to a remote server, which may communicate them in turn to the monitoring device via the wireless wide area network.
  • the configuration information received by the monitoring device is then stored in the electronic memory of the device.
  • the communication module may also comprise means for wireless communication between the monitoring device and an on-board computer of the motor vehicle.
  • Such provisions may for example make it possible to communicate, to the on-board computer, information about the pressure measured inside the tire in order to detect any drop in pressure and to alert the driver if the tire pressure is too low.
  • the processing module comprises for example one or more processors capable of executing a computer program product in the form of a set of program code instructions.
  • the computer program is for example stored in the electronic memory of the monitoring device.
  • the processing module comprises one or more programmable logic circuits (FPGA, PLD, etc.), and/or one or more specialized integrated circuits (ASIC), and/or a set of discrete electronic components, etc.
  • FPGA programmable logic circuits
  • ASIC specialized integrated circuits
  • the processing module comprises a set of means configured in the form of software (specific computer program product) and/or hardware (FPGA, PLD, ASIC, discrete electronic components, etc.) in order to implement various algorithms making it possible in particular, based on the pressure measurements provided by the pressure sensor, on the one hand, and based on the configuration data, on the other hand, to generate data, called “advanced data”, relating to use of the tire over time.
  • the advanced data comprise for example information about a level of wear of the tire. It is specifically possible to determine, based on the pressure measurements of the tire, variations in the running characteristics of the tire. These gradual changes in the running characteristics of the tire may then make it possible to deduce a rubber thickness of the tread. Where applicable, information indicating that the rubber thickness of the tread has passed below a predetermined threshold value may be communicated to the on-board computer in order to signal to the driver that a tire change should be performed. As an alternative or in addition, this information may be communicated to a local motor vehicle service center using the communication module and via a wireless wide area network.
  • the advanced data may comprise information about excessive loads to which the tire has been subjected. It is specifically possible to detect a change in rolling characteristics caused by an excessive load. It is then possible to count a number of excessive loads to which the tire has been subjected over its life. It is therefore possible to contemplate adapting certain driver assistance functions on the basis of the vehicle load.
  • the advanced data may comprise a mileage of the tire since it was put into service.
  • an accelerometer may be incorporated into the monitoring device in order to determine, on the basis of the configuration data relating to the geometry of the tire, and in particular its diameter, a distance covered by the tire.
  • Other advanced data may also be generated by the processing module, in particular data relating to the age of the tire, to a number of punctures suffered by the tire, etc.
  • the advanced data are themselves also stored in the electronic memory of the monitoring device. They are updated as the processing module determines new values for these advanced data. They may be communicated to the on-board computer of the vehicle and/or to a motor vehicle maintenance center, in particular in order to monitor the state of the tire and raise an alert if a tire change becomes necessary.
  • the remainder of the description describes a method for reconfiguring the monitoring device making it possible to optimize the management of the advanced data of the device.
  • Such a method may for example be implemented by the processing module of the monitoring device.
  • FIG. 1 shows the main steps of such a method 10 .
  • a step 13 of reception of new configuration data by the communication module of the monitoring device triggers a step 14 of detecting a tire change. This involves determining whether the monitoring device is now associated with a new tire, or whether it is still associated with the same tire. This detection 14 of a tire change is performed based on the previously stored configuration data MEM in the memory of the monitoring device, on the one hand, and based on the new configuration data that have just been received by the communication module of the monitoring device, on the other hand. This step will be described in more detail later on with reference to FIG. 3 .
  • the new configuration data received by the communication module in step 13 may for example originate from direct wireless communication between the monitoring device and a configuration apparatus used by a motor vehicle technician who is repairing or changing the tire with which the device is associated.
  • the new configuration data received by the communication module in step 13 may originate from a remote server via a wireless wide area network.
  • the remote server has for example previously obtained the information that the tire has been changed or repaired for this monitoring device via an Internet application used by the technician.
  • the method 10 performs a step 15 of erasing the advanced data from the memory of the monitoring device.
  • the advanced data generated by the processing module for the tire with which the monitoring device was previously associated are then erased or reinitialized to a default value indicating that no information is available.
  • the method 10 performs a step 16 of retaining the advanced data.
  • the advanced data that are in memory are neither erased nor reinitialized, and they continue to apply for the tire associated with the monitoring device.
  • the monitoring device may autonomously detect that a tire change has probably taken place. In such a case, the monitoring device may then transmit a request to transmit new configuration data in order for the device to be reconfigured.
  • the monitoring device autonomously detects that a tire change has probably taken place, the monitoring device may also be configured so as to consider that the stored advanced data are no longer valid until the monitoring device receives new configuration data.
  • invalidated advanced data are not erased or reinitialized.
  • the monitoring device may continue to update these advanced data, under the assumption for example that there has not been a tire change.
  • the on-board computer will be able to take into account the fact that there is uncertainty with regard to the relevance of the advanced data for the various intelligent functions that it implements.
  • the advanced data may either be revalidated, for example if it is subsequently determined that it is indeed still the same tire that is associated with the monitoring device, or be erased, for example if it is subsequently determined that the monitoring device is associated with a new tire.
  • FIG. 2 shows the main steps of one particular mode of implementation of the method 10 according to an aspect of the invention.
  • the method 10 When the internal tire pressure measured by the pressure sensor is less than a first predetermined threshold S 1 , the method 10 performs a step 11 of invalidating the advanced data stored in the memory of the monitoring device.
  • the first threshold S 1 is for example chosen such that, if the tire pressure is less than this threshold, it is highly probable that the tire is punctured or that it has been removed.
  • Invalidating 11 the advanced data consists for example in setting a Boolean variable to a certain value (for example the value 0) indicating that the advanced data are not valid.
  • the communication module of the monitoring device sends a request 12 to send new configuration data.
  • the first threshold S 1 and the second threshold S 2 may have the same value, or else they may have different values.
  • This request 12 is transmitted for example to a configuration apparatus of a technician, or else to a remote server via a wireless wide area network (the request then being able to be transmitted to the technician or to the vehicle owner via an Internet application).
  • reception 13 of new configuration data by the communication module of the monitoring device triggers a step 14 of detecting a tire change.
  • the method 10 performs a step 15 of erasing the advanced data from the memory of the monitoring device.
  • the method 10 performs a step 16 of retaining the advanced data.
  • the advanced data are revalidated, otherwise the Boolean variable is set to a value (for example the value 1) indicating that the advanced data are valid.
  • the advanced data in memory are invalidated.
  • the monitoring device may nevertheless continue to update these advanced data, but it retains information, via the Boolean variable set to the value 0, that there is uncertainty with regard to the relevance of these advanced data.
  • the advanced data are revalidated if it is determined that the same tire is still involved, or else they are erased if it is determined that a new tire is involved.
  • the Boolean variable is reinitialized to the value 1, such that the new advanced data that will be determined by the processing module will be considered valid.
  • the advanced data may comprise information about a number of punctures suffered by the tire and about a history of repairs performed on the tire. If this is the case, the method 10 may furthermore comprise the following optional steps if it is determined in step 14 that it is still the same tire that is associated with the monitoring device following the detection of depressurization (pressure ⁇ S 1 ) and then repressurization (pressure >S 2 ) of the tire:
  • the step 11 of invalidating the advanced data and the step of revalidating the advanced data are optional steps.
  • FIG. 3 shows one particular mode of implementation of the step 14 of detecting a tire change.
  • This step takes as input firstly the configuration data MEM stored in the memory of the monitoring device and secondly new configuration data NCO received by the communication module of the monitoring device.
  • a check code is calculated 141 based on the stored configuration data MEM.
  • the configuration data are encoded on twenty bytes and the check code is a cyclic redundancy code (CRC) calculated in a conventional manner based on these twenty bytes of data.
  • CRC cyclic redundancy code
  • a check code is calculated 142 similarly based on the received new configuration data.
  • the two calculated check codes are different, then this means that the stored configuration data MEM are different from the received configuration data NCO.
  • the received configuration data NCO then correspond to a tire different from the tire to which the stored configuration data MEM correspond. In other words, this means that there has been a tire change 146 .
  • the two calculated check codes are identical, this probably means that this is the same tire.
  • the configuration data do not make it possible to uniquely identify a tire (this is the case for example if a serial number included in the configuration data corresponds to a manufacturing batch of several tires rather than to an individual tire).
  • the monitoring device may transmit, using the communication module, a request 144 to confirm that it is actually the same tire (and that it is not another tire happening to belong to the same manufacturing batch as the previous tire).
  • reception 145 of a confirmation transmitted for example by the technician it is possible to determine whether there has 146 or has not 147 been a tire change.
  • the description above clearly illustrates that, through its various features and the advantages thereof, an aspect of the present invention achieves the set aims.
  • the method 10 makes it possible to keep, in the memory of the monitoring device, advanced data that are consistent with the tire with which said monitoring device is associated, while at the same time limiting any interventions by a human operator.
  • the configuration data may comprise information elements other than those described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Health & Medical Sciences (AREA)
  • Computing Systems (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Measuring Fluid Pressure (AREA)
  • Tires In General (AREA)
US17/058,758 2018-05-31 2019-05-27 Method for reconfiguring a device for monitoring a motor vehicle tyre Active 2039-05-28 US11325433B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1854671 2018-05-31
FR1854671A FR3082081B1 (fr) 2018-05-31 2018-05-31 Procede de reconfiguration d’un dispositif de controle d’un pneumatique de vehicule automobile
PCT/FR2019/051219 WO2019229343A1 (fr) 2018-05-31 2019-05-27 Procédé de reconfiguration d'un dispositif de contrôle d'un pneumatique de véhicule automobile

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US20210206211A1 US20210206211A1 (en) 2021-07-08
US11325433B2 true US11325433B2 (en) 2022-05-10

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US (1) US11325433B2 (fr)
CN (1) CN112470446A (fr)
FR (1) FR3082081B1 (fr)
WO (1) WO2019229343A1 (fr)

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US20220053450A1 (en) * 2020-10-15 2022-02-17 Alexey Khoryaev Techniques for supporting low latency nr positioning protocols
CN113386662A (zh) * 2021-05-25 2021-09-14 深圳市元征未来汽车技术有限公司 一种提醒方法及提醒装置

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FR3082081A1 (fr) 2019-12-06
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CN112470446A (zh) 2021-03-09
US20210206211A1 (en) 2021-07-08

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